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PatchSiren cyber security CVE debrief

CVE-2026-111709 canove CVE debrief

CVE-2026-111709 is a vulnerability in WhaTicket Community through commit cf04795, allowing authenticated agents to access other agents' tickets due to an insecure direct object reference. The vulnerability exists because ShowTicketService performs no ownership or queue checks, enabling attackers to read full message history and post WhatsApp replies by supplying another agent's ticket ID.

Vendor
canove
Product
whaticket-community
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-16
Original CVE updated
2026-10-21
Advisory published
2026-10-16
Advisory updated
2026-10-21

Who should care

Defenders responsible for WhaTicket Community deployments should assess exposure and prioritize verification of this vulnerability. They should review the vulnerability's impact on their environment, consider the potential for unauthorized information disclosure and modification, and take steps to verify the presence of this vulnerability in their deployments. Additionally, security teams and operators should be aware of the vulnerability's existence and

Why it matters

CVE-2026-111709 is a medium-severity vulnerability in WhaTicket Community that allows authenticated agents to access other agents' tickets, potentially leading to unauthorized information disclosure and modification.

  • Authenticated agents can access other agents' tickets
  • Full message history can be read
  • WhatsApp replies can be posted on behalf of other agents

Technical summary

The vulnerability exists in WhaTicket Community through commit cf04795, allowing authenticated agents to access other agents' tickets due to an insecure direct object reference. This is caused by ShowTicketService performing no ownership or queue checks. The vulnerability allows attackers to read full message history and post WhatsApp replies by supplying another agent's ticket ID. Defenders should assess the impact of this vulnerability on their deployments and prioritize verification and mitigation efforts to prevent unauthorized access and potential data breaches.

Defensive priority

Defenders should prioritize verifying the presence of this vulnerability in their WhaTicket Community deployments and restrict access to ticket and message history.

Recommended defensive actions

  • Verify the presence of this vulnerability in WhaTicket Community deployments
  • Restrict access to ticket and message history
  • Implement proper ownership and queue checks in ShowTicketService
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details about the vulnerability, including its existence in WhaTicket Community through commit cf04795 and the potential for authenticated agents to access other agents' tickets.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-111709 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-111709

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-111709 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-111709

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • WhaTicket Community through commit cf04795 IDOR via /tickets/:ticketId and /messages/:ticketId

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/111xxx/CVE-2026-111709.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://hackmd.io/@hieuPenguinnn/whaticket-community-signup-eop-ticket-idor

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/canove/whaticket-community/blob/cf047955a6f0d07002ed89c67d765c28d06f8d52/backend/src/services/TicketServices/ShowTicketService.ts

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/canove/whaticket-community/blob/cf047955a6f0d07002ed89c67d765c28d06f8d52/backend/src/controllers/MessageController.ts

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/canove/whaticket-community

    Supplemental source - product

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/whaticket-community-through-commit-cf04795-idor-via-tickets-ticketid-and-messages-ticketid

    Supplemental source - third-party-advisory

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.